FileIO S3: Add support for Assume-Role-Arn and other AWS Client properties

[c-thiel]

Currently FileIO respects:

• s3.endpoint
• s3.access-key-id
• s3.secret-access-key
• s3.region

It would be great to also support additional client attributes which help with cross-account setups:

• client.assume-role.arn
• client.assume-role.external-id
• client.assume-role.region
• client.assume-role.session-name
• client.assume-role.tags.
• client.assume-role.timeout-sec

Java reference: https://iceberg.apache.org/javadoc/1.4.1/constant-values.html (AWSProperties section)

[Xuanwo]

Thank you for posting this. I have compared this list with the features supported by OpenDAL, and here are my findings.

• client.assume-role.arn: we can use role_arn
• client.assume-role.external-id: we can use external_id
• client.assume-role.region: not supported yet, should this usually be the same region with bucket?
• client.assume-role.session-name: created https://github.com/apache/opendal/issues/4974
• client.assume-role.tags: created https://github.com/apache/opendal/issues/4975
• client.assume-role.timeout-sec: created https://github.com/apache/opendal/issues/4976